RE Swedish OOB

[janm67]

Some notes on the Swedish OOB:
- Units 306, 307, 308, 309 (SAAB A 21) have Fire control 15... that seems excessive for a WWII-era aircraft with no special equipment.
- Units 313, 314, 315, 316 (A 32 Lansen) should have at least some EW capability. They had an RWR built in and often carried chaff pods.
- Units 317, 318, 319, 320 (J 35 Draken) on the other hand should have EW 0, they had no RWR or jammers. They should probably be Uncommon or Rare in the ground attack role.
- Units 321, 322 (Sk 60B) should not be Uncommon, in fact they were the most likely to be used for CAS.
- Unit 323 (AJ 37 Viggen with rockets) should not be Rare.
- Unit 325 (AJ 37 Viggen with bombs) should have the same fire control value as the other Viggen variants. It should not be Rare, there were huge stockpiles of these bombs. Also, the AJ 37 could carry up to 16 120 kg bombs, not just 4.
- There was a fun variant of Unit 303 (SAAB B 18) called T 18. It had two 20 mm guns and a 57 mm Bofors autocannon with 40 rounds, 100 rpm. Intended for use against landing craft and small ships, perfect for a "Defend the beach" scenario. Available from 1/47 to 12/57.